140353431181 has 12 divisors (see below), whose sum is σ = 147743099764. Its totient is φ = 133292073600.

The previous prime is 140353431173. The next prime is 140353431193. The reversal of 140353431181 is 181134353041.

It can be written as a sum of positive squares in 6 ways, for example, as 52482686281 + 87870744900 = 229091^2 + 296430^2 .

It is not a de Polignac number, because 140353431181 - 2³ = 140353431173 is a prime.

It is a super-2 number, since 2×140353431181² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140353431121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1316640 + ... + 1419241.

Almost surely, 2^140353431181 is an apocalyptic number.

It is an amenable number.

140353431181 is a deficient number, since it is larger than the sum of its proper divisors (7389668583).

140353431181 is an equidigital number, since it uses as much as digits as its factorization.

140353431181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736000 (or 2735971 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 140353431181 in words is "one hundred forty billion, three hundred fifty-three million, four hundred thirty-one thousand, one hundred eighty-one".